EP 0356618 B1 19921111 - SHUT-OFF AND/OR CONTROL ELEMENT FOR TAPPING MOLTEN METAL MELTS FROM A METALLURGICAL CONTAINER
Title (en)
SHUT-OFF AND/OR CONTROL ELEMENT FOR TAPPING MOLTEN METAL MELTS FROM A METALLURGICAL CONTAINER
Publication
Application
Priority
DE 3826245 A 19880802
Abstract (en)
[origin: JPH0270374A] PURPOSE: To ensure the good sealness of a closing mechanism in the molten metal tapping port of a metallurgical vessel by mutually conforming the coefficients of thermal expansion in both refractory parts with each other at the closing parts of the molten metal tapping hole so as to develop an annular gap which prevents the penetration of the molten metal during pouring operation. CONSTITUTION: In the closing and regulating mechanism for tapping port of the molten metal from the metallurgical vessel, a fixed part 2 of fixed refractory portion and a rotary part 3 of rotary refractory portion, are provided. Cylindrical sealing surfaces 17, 18 in both parts 2, 3 are formed and mutually fitted. Then, the coefficients of thermal expansion in the fixed part 2 and the rotary part 3 of both refractory portions are mutually conformed with each other so as to develop the annular gap 19 for executing the clearance fitting which prevents the penetration of the molten metal during pouring operation. The annular gap is desirable to be 0.05-0.7 mm at a low temp. In this way, the good sealness of the closing mechanism in the molten metal tapping port of the metallurgical vessel can be guaranteed.
IPC 1-7
IPC 8 full level
B22D 41/26 (2006.01); B22D 11/10 (2006.01); B22D 37/00 (2006.01); B22D 41/14 (2006.01); B22D 41/32 (2006.01); B22D 41/44 (2006.01)
CPC (source: EP KR US)
B22D 37/00 (2013.01 - KR); B22D 41/14 (2013.01 - EP US)
Citation (examination)
US 3651998 A 19720328 - ROCHER GEORGE
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0356618 A1 19900307; EP 0356618 B1 19921111; AT E82173 T1 19921115; BR 8903810 A 19900320; CA 1340550 C 19990518; CN 1019458 B 19921216; CN 1039748 A 19900221; DE 3826245 A1 19900208; DE 3826245 C2 19910523; DE 58902680 D1 19921217; ES 2035411 T3 19930416; GR 3006459 T3 19930621; JP 2764615 B2 19980611; JP H0270374 A 19900309; KR 900002869 A 19900323; KR 960013887 B1 19961010; SU 1722220 A3 19920323; US 4966314 A 19901030; ZA 893952 B 19900228
DOCDB simple family (application)
EP 89107511 A 19890426; AT 89107511 T 19890426; BR 8903810 A 19890731; CA 604805 A 19890705; CN 89104923 A 19890720; DE 3826245 A 19880802; DE 58902680 T 19890426; ES 89107511 T 19890426; GR 920402816 T 19921207; JP 18622089 A 19890720; KR 890008715 A 19890623; SU 4614415 A 19890621; US 38847389 A 19890802; ZA 893952 A 19890524